Plotter ROM for the HP9810 - how to use it?

[Thomas Falk]

Hi Simon,

because Tony has already answered, I don't have to point in his direction.

One addition: If you have to dive deeper in the machine, I recommend the study of the patent 3859636. It describes the HP9810 in every detail down to the micro code and includes overviews, schematics and listings on the system. Hopefully you will not need it, but in my case I found two failing bits in one of the microcode ROM at the end of three months work.

If you have questions, you may also ask me. Where are you from?

Best regards,

Thomas